No need to connect to the mobile phone, no need to link to APP. It is very suitable for people who want a simple fitness tracker that can work without a cell phone. This fitness tracker can accurately record your steps, calories burned, distance, and sleep time. Help you to stay active and develop a healthy lifestyle Setting up this watch is very simple. You just need to enter the correct time, date, your height, weight, and age in the watch's setting menu to get it started. The fitness watch is IP68 waterproof, you can wear it to go swimming.